API reference links are not working

Docs - Nov 30, 2015

Developer reported that the links under the contents section of the API reference aren't working: [Image Removed] ...

Particles: SetFloatParameter not always having an effect

UE - Graphics Features - Oct 7, 2015

A licensee is trying to use Distribution Float Particle Parameters for the Noise properties of a Beam Particle. When trying to change these parameters in a Blueprint, some work, others don't. When ...

Compile error in ShadowDepthVertexShader.usf if INTERPOLATE_POSITION

UE - Graphics Features - Oct 21, 2015

Shader compile error in function PositionOnlyMain() in ShadowDepthVertexShader.usf if defined INTERPOLATE_POSITION. LogShaderCompilers:Warning: 1 Shader compiler errors compiling WorldGridMaterial ...

Ray Traced Distance Field on OpenGL not working

UE - Graphics Features - Dec 1, 2015

Are Ray Ttraced Distance Field Soft Shadows supported on OpenGL ES3.1 + Android Extension Pack platforms like the Shield Tablet or Shield Console? Since the ES3.1+AEP platform supports deferred ren ...

Meshes made with the Pivot Painter tool don't work correctly on OpenGL ES3.1 + AEP

UE - Platform - Mobile - Dec 1, 2015

In the project attached in original UDN post (too big to attach here) there is a tree that was created with the pivot painter tool that is animated. In the editor it behaves correctly, but trying t ...

Reimporting a skeletal mesh by dragging FBX to content browser crashes editor

Tools - Nov 12, 2015

Reimporting a skeletal mesh by dragging FBX to content browser crashes the editor. I suspect something is wrong with the FBX. The user reported that the data is from Blender. FBX file attached for ...

Possible memory leak in FVertexFactoryData's ClothVertexFactories

UE - Simulation - Physics - Character - Oct 28, 2015

Developer implemented their own marker system with callstack data in their own custom version of malloc/realloc/free, and they reported that there might be a memory leak in the ClothVertexFactories ...

Please support ApplyAdditive on MeshSpace

OLD - Anim - Oct 23, 2015

Licensee reported Applied Additive animation with ApplyAdditive node with MeshSpace, but Applied animation is incorrect if applying same with AnimSequence "Base Pose Type" animation to Base pin. H ...

Unable to use iOS in-app purchases when not using GameCenter or CloudKit

UE - Platform - Mobile - Jan 15, 2016

A developer was trying to use in-app purchases on iOS, but was getting messages that the OnlineSubsystemIOS was not enabled. Turns out, enabling only in-app purchases still means the OnlineSubsyste ...

Particle CPU cost highly increase at second "show" of a streaming level.

UE - Graphics Features - Feb 24, 2016

It seems that Particle CPU cost highly increase at second "show" of a streaming level. The Licensee's team sent a sample to reproduce this problem. So I put the project and wrote how to reproduce on ...